Gallery: June 5, 2014: U.S. President Barack Obama, third left, walks with, from left to right, Italian Prime Minister Matteo Renzi, Canadian Prime Minister Stephen Harper, German Chancellor Angela Merkel, British Prime Minister David Cameron, French President Francois Hollande, European Commission President Jose Manuel Barroso and Japanese Prime Minister Shinzo Abe, at G7 meeting in Brussels, Belgium.

Charles Dharapak – AP

Gallery: June 5, 2014: U.S. President Barack Obama, center, laughs as he is seated with British Prime Minister David Cameron, left, and French President Francois Hollande during a G7 session in Brussels, Belgium.

Yves Loggh – AP

Gallery: June 5, 2014: G7 heads of state pose for a group photo during the second day of the G7 meeting in Brussels.

Charles Dharapak – AP

Gallery: June 5, 2014: U.S. President Barack Obama, right, smiles as he listens to British Prime Minister David Cameron, during a G7 working session in Brussels, Belgium.

Charles Dharapak – AP

Gallery: June 4, 2014: U.S. President Barack Obama, right, and German Chancellor Angela Merkel are seated together at a G7 working dinner in Brussels, Belgium.

Gallery: June 3, 2014: President Barack Obama and Polish President Bronislaw Komorowski stand for a group photo with Central and Eastern European Leaders in Warsaw, Poland.

Charles Dharapak – AP

Gallery: June 3, 2014: U.S. President Barack Obama stands up and toasts as he stands with Lithuania President Dalia Grybauskaite, center, as he attends a dinner at the Royal Castle in Warsaw, Poland.

New York Times – Stephen Crowley

Gallery: June 3, 2014: President Barack Obama attends a meeting with leaders from around Central and Eastern Europe at the Presidential Palace in Warsaw, Poland.

New York Times – Stephen Crowley

Gallery: June 3, 2014: President Barack Obama and President Bronislaw Komorowski of Poland, right, speak with guests at a dinner commemorating the 25th anniversary of the Solidarity uprisings that led to the end of communist rule, at the Royal Castle in Warsaw, Poland.

Czarek Sokolowski – AP

Gallery: June 3, 2014: U.S. President Barack Obama,right, and Poland's President Bronislaw Komorowski ,left, wave wave at Belveder residence in Warsaw, Poland.

Gallery: June 3, 2014: US President Barack Obama, left, and Polish President Bronislaw Komorowski speak with Polish and US soldiers at the military airport in Warsaw, Poland.

Charles Dharapak – AP

Gallery: June 3, 2014: A Polish security official stands watch as U.S. President Barack Obama, left, and Poland's President Bronislaw Komorowski make statements after meeting U.S. and Polish troops at an event featuring four F-16 fighter jets, two American and two Polish, as part of multinational military exercises, in Warsaw, Poland.

Charles Dharapak – AP

Gallery: June 2, 2014: President Barack Obama walks with Air Force Col. William M. Knight to board Air Force One at Andrews Air Force Base, Md., as he begins his three-country trip to Poland, Belgium and France.

What do you get when you combine three bands, a stage full of barbers and hundreds of volunteers? You get the Battle of the Bald, a head-shaving tournament. Sponsored by the St. Baldrick's Foundation, which raises funds for childhood cancer research, the event at the Varsity Theater in Minneapolis featured volunteers who competed for the honor to have their heads shaved by raising money. Started in 2000, Battle of the Bald events are held throughout the country with the motto "Brave a shave for kids with cancer."